Wrench.



l PATENTED PEB. l2, 1907. D. J. MUOSKER.

WRENCH.

APrLIoATIoN FILED SEPT. 25. 1995.

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UNITED STATES PATENT oEEIoE. i

DANIEL J. MeoSKEa, or PROVIDENCE, RHODE ISLAND.

WRENSH.

Specification of Letters Patenti Application fllad September 25. 1905. Serial No, 279.886.

" `Patented Febwl', 19,07

To all whom it may concern,.-`

Be itknown that I, DANIEL J MoOsirER, citizen of the' United States, residin at the` city of Providence, in the county o Providence and State of Rhode Island, have invented certain new and useful Im rovements in Wrenches, of which the fol owing is a specification, reference being had therein to t e accompanying drawings.

This invention relates to wrenches, and has for its object to provide a wrench that will automatically bite or tighten its grip upon the Work and at the same time automatically lock the jaws against an opening movement when a strain is applied to the Voperatin -handle A furt er object of the invention* is that 4the movable jaw may be readily unlocked or released by a slight movement of the operating-handle, thereby allowing said movable jaw a free movement either in or out, after which it may be locked automatically again by another slight movement of said handle. With these and other objects in view the invention consists of certain novel features of i construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a side velevation of iiiy improved wrench, partly in section, illustrating the manner of engaging and locking the movable jaw by the operating-handle. Fig. 2 is a modification illustrating another means for locking said jaw. Fig. 3 is`a transversesectional view on line 3 3 of Fig. 1, illustratinfr the wedge sha e of the movable jaw and the recess in t e body portion of the jaw to receive the same. Fig. 4 is a plan view of the pivotcd biting-jaw. Fig. 5 shows the pivoted end of the operating-handle as plain, which is the construction used to engage and bind the shank of the movable jaw when no teeth are employed in either.

My improved wrench may be constructed to serve any desired purpose; but the wrenches herewith illustrated are more ar ticularly ada ted to be used as a pipewrench, but tlie same general lprinciple may be ap lied to a monkey-Wrenc for ordinary use, lip desired.

Referrin to the drawings, at 10 is the body portion of the wrench, throu h the length of which is formed the hole 11 or the reception of the shank of the movable jaw 16. The sidewalls of this hole are preferably dwnitogpther toward the top," for a.

tapering ole in transverse sectiontf.` e

Fig. 3.1 vThe lower forward end 12 of tie body portion forms what is herein` er desi;

nated the fixed jaw, to which jaw ispref-A erably pivoted` a hardened tootlied fac e gripping or biting aw pivoted at 13 throdga the ears 14. This jaw will swing and ad`us itself to better grip or biteV the work W en the strain is applied to the same, but is designed more articnlarly to rock and release the grip on t e work when the handle is carried back for a new bite.

The movable jaw 16 has a shank 17, held to slide longitudinally in the said hole l1 ii the body portion. This shank 17 is preferably made tapering toward its u per edge to correspond with and {it into therhole l1 in the body portion, formin a sliding dovetail joint. By constructing iis sliding. joint in the manner described the Wrench is automatieally locked against a further opening movement when the strain is applied.

On the lower ed e of the shank ofi the inner end 21 of the operating-handle 20 is carried into the body portion 10 a short distance beyond the fulcrumpin 19, and on this end ispivotally mounted on thepin 24 o. shoe 22, having teeth 23 formed thereon. When the outer end ofthe handle is carried downward, the said inner end 21 raises up, causing the teeth of said slioe to engage the toothed portion on the shank, at the same time pressing, the said tapered shank upward, which acting automatically binds and holds the shank securely from moving. An essential feature of this construction is that when the pivoted end 21 of the operating-handle is raised it naturally moves on the arc of a. circleabout its pivot-pin, and b engaging the teeth on the shank the mova le jaw is naturally drawn inward slightly, causing it to bite or grip the Work automatically when a strain is applied to the operating-handle. The shoe 22 is shown as being a separate piece pivoted to the operating-handle, but this part may be made integral with the said IOO handle, "if desiied. Wheni it is desired to rel with the teeth of said jaw to cause a simultalease thismovable jaw, the handleI is simply raised and the said )aw ,is released and free to be moved either in br Jou't'. ,#When the taered shankis used, the movable jaw would be automatically bound and locked on account of its wedging action substantially the saine in 'effect as if there were no lteeth emplo ed. 'l'

i the modification illustrated in Fig. 2 the pivoted end of the handle is formed into the segment of a gear whose center is that of the pivoting- )in 19, a portion of the teeth of this segment )eing cut away at 22, so that when the outer end of the handle 20 is carried into a. certain position the said cut-out portion comes opposite the teeth, releasing the same and allowing a free longitudinal movement of the said adjustable jaw. In operating this last-named construction the o erating-handle is carried up to release the adjustable jaw, whi is then set to the work, after which the handle is brought down, drawing said jaws tightly against the work, causing them to grip with great force. The work ma f be readily released by carrying the handle ack to the required position. The construction is extremely simple and practical and the cost of construction is reduced to the minimum.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A wrench comprising a body portion carrying a stationary jaw and provided with an opening having tapered Walls, a handle pivoted to seid body, a sliding jaw working m said opening and tapered in cross-section, and means carried by said handle for simultaneously imparting an upward and rearw'ard movement to said movable jaw. i

2. A wrench comprising a body portion carrying a stationary jaw and provided with an opening having tapered walls, a handle pivoted to said body, a sliding jaw working 1n said opening and tapered in cross-section, said sliding jaw being* )rovided with teeth, and teeth carried by sai handle and meshing neous upward and rearward movement of said movable jaw.

3. A wrench comprising a body portion carrying a stationary jaw and provided with an opening having tapered walls, a sliding jaw working in said opening and tapered in cross-section, a hand e having its forward end ivoted to said body7 and means carried by ti'ie pivoted end of said handle for simultaneously imparting an upward and rear ward movement to said movable jaw.

4. A wrench comprising a body portion carrying a stationary jaw and provided with an opening having tapered Valls, a handle pivoted to said body, a sliding jew working 1n said opening and tapered in cross-section, and a pivoted member carried by said handle for sin'iultaneously imparting an upward and rearward movement to said mowtble jaw.l

5. A wrench comlfrising a body portion carrying a stationary jaw and providedwith an opening having tapered` walls, a handle pivoted to said body, a sliding jaw working t in Said opening and provided with teeth on its lower edge, said sliding jaw having a shank tapered in cross-section, and a pivoted member carried by said handle and provided with teeth for engaging the teeth of said movable jaw to impart a simultaneous upward and rearward movement to the latter.

(i. A wrench comprising a body portion provided with a stationary jaw and provided with an opening having tapered walls, a movable jaw provided with a shank working in said opening, said shank being tapered in cross-section, and a handle pivoted to said body portion and provided with means for engaging the under side oi' the shank of said movable jaw to impart an upward locking movement thereto.

In testimony whereof I aflix my signature in presence of two witnesses.

DANIEL J. MCOSKER.

Witnesses v HOWARD E. Baumw, E. I. OGDEN. 

